Electrically-heated apparatus.



T. HOOCK.

ELECTRICALLY HEATED APPARATUS.

APPLICATION FILED-OCT. 23. I912.

Patented July 13, 1915.

2 SHEETS-SHEETI HIIIIIIII II IIIIIII.

IIII IIIIINII IIII I I WITNESSES;

T. HOOCK. ELECTRI CALLY-HEATED APPARATUS.

APPLICATION FILED OQT. 23, 1912.

Patented July 13, 1915.

2 SHEETS-SHEET 2.

AT.TORNEY s ATENT orrrcn rnnononn nooox, or COLOGNE, BAYENTHAL, GERMANY, ASSIGNQR 'ro wns'rIN'e House ELECTRIC AND MANUFACTURING COMPANY, A CORPORATION or PENNSYL- VANIA.

ELEGTRICALLY-HEATED APPARATUS.

Specification of Letters Patent. "Patented July 13, 1915.

Application filed October 23, 1912. Serial No. 727,294.

My invention relates to electrically heated apparatus, and it has special reference to cooking ranges and ovens of the so called heat-storage type which are provided with a mass or body of material adapted to store or accumulate heat that may be supplied thereto electrically at a low and con- 'stant rate, whereby the accumulated heat may be available for cooking purposes at any desired rate. v

The object of my invention is to simplify and improve the construction and operation of devices of the above-indicated character, and to provide an inexpensive device of great utility which maybe operated economically by reason of its high efiiciency.

Another object of my invention is to pro vide 'a unitary structure embodying a range and an oven, having a single heat-storage body interposed between them that is constructed and arranged in such manner that any of theseveral hot-plates of the'range and the oven may be utilized for various purposes Without materially affecting the temperature or heat distribution of the remaining hot-plates.

A further object of my invention is to provide means whereby the hot-plates of the range may be adjusted in position as desired in, order that the various cooking operations embody in the oven a plurality of hot-plates and to provide means for regulating the heat maybc'performed under the most economical and eliicient conditions. I

A stillfurther object of my invention is to distribution therefrom within the oven.

A still further object of my invention is to provide adequate means for connecting the movable hot-plates with the heat-storage body to conduct the heat thereto without undue loss and to permit a considerable degree of movement of said hot-plates.

My invention may be best understood by reference to the accompanying drawings in whichp Figure 1 is a view, partially in section and partially inside elevation, of a cooking device "embodying my invention. Fig. 2 is a pose of connection view, partially in section and partially'in front elevation, of the device shown in Fig. 1. Fig.3 is a View, in side elevation,,of a portion of a device embodying a modified form of my invention. Fig. 4: is a view, 60. partially in sectionand partially in front elevation, of. the device shown in Fig. 3. Figs. 5 and 6 are enlarged views, respectively in side elevation and in front elevation, of a portion of the mechanism shown in Figs. 3 and 4, and Figs. -7, 8 and 9 are sectional views, respectively in plan, end elevation and frontelevation; of a portion of a device embodying a further modification of my invention. 70, Referring toFigs. 1 and 2 of the drawings, the cooking apparatus here shown com.- prises a range 1, an oven 2, a heat-storage body3, an electric heater 4: andwalls 5 of. heat-insulating material that envelop said parts. The heat-storage body 3 comprises a main body portion 6, disposed between the rangel and the oven 2 and having a plurality of integrally associated 'PIOjGCtiIlg arms 7 and 8 which are adapted to store heat and deliver the same to the range 1 and to the oven 2, respectively- The several arms 7 are entirely independent, the one from the other, except as they form integral parts of the main body portion 6, and are separated by and embedded in theheat-insulating material 5. The heat-storage body 3 and ,its projecting arms may conveniently be made of cast iron, but I do not wish to confine myself to any specific material, as various materials are well adapted to accumulate and store heat, and may, therefore, be employed for this purpose.

The heater unit 4 is inserted or embedded in the main body portion 6 of the'heatstorage body 3 and maybe of any wellknown construction. The heater unit 4: is provided with a plurality of leads 9 which terminate in a terminal box 10 for the purto an outside source of .100 energy. (not shown); The respective ends of the projecting heatstorage arms 7 are severally provided with a hot-plate 11 of a similar material-to that which constitutes the main heat-storage body 10 3, and'said hot-plate 11 is located in a suitable recess 12 and is provided with mechanical means'13 for raising and lowering the same with respect tothe upper surface. .o'f' h r 1.1.

Preferably, each hot-plate 11 constitutes a disk which is provided with a downwardly projecting stem lt having a plurality of teeth 15 thereon. The .stem 14 projects into a suitable opening-in'a supporting member 16 which is securely fastened to the arm 7 by bolts 17 or other suitable means. The supporting member 16 is of material similar to that of the heat-storagebody 3, and if :desired mayform an integral part of the arm 7. Associated withthe supporting member 16 is: a pivotally mounted pinion 18 that is adapted to cooperate with the teeth 15 in a well-known manner. The pinion 18 isfixed-to a shaft 19 that projects tothe-exterior of the range 1- and is provided with a suitable handle 20 by means'of which the hot-plate 11' may be raised and "lowered through. the agency of therackandpinion connection hereinbefore set forth.. A

"notched segment 21 is provided on the ex terior of the range lv for the purpose of de-- 1 -to conduct the'heatefiiciently-from the arm I p 7 to the hot-plate 11, a plurality of flexible ,heat-conductingmembers 23 are provided fining various positions of the handle 20,

whereby the hot plate 11 maybe definitely retained in any'desired position. In order whereby movement fof the hot-plate 11 is permitted. v i 4 Removable pads 24 of heat insulating material are disposed within the upper portions of the several recesses 12 for the purpose of retaining the heat and preventing radiation losses when the hot-plates-are not in use.

Handles 25 are secured to'the pads 24 for convenience in handling.

In operation, the pad 24c is removed and the hot-plate 11 raised to the desired height 40 by means of the handle 20 and the rack-andpinion mechanism hereinbefore described, after which a cooking utensil 26 may be disposed upon the hot-plate 11 as shown in the drawings. For most efiicient operation, it is, of course,'evident that the hot-plate 1-1 and the utensil 26 resting thereon should be located as far below the surface of the range aspossible, so that excessive radiation losses are prevented and practically all-of the heat of the hot-plate 11 is transmittedto the utensil 26.

" Any one, or all, of the hot-plates ll-may beemployed, and, by reason of the separate projecting arms 7 of the heat-storage body 3,.

the temperature and heat distribution of the various arms and hot-plates are not materially afi'ected by the cooking operations which are being conducted on any other hotplates, that is to -say,-the cooking operation on one ofthev hot-plates does not tend to materially lower the temperature of any of the other plates since the. projecting arm with whichit is associated is substantially independent of the other arms. When the hot-plates are not in use, they should pref- 11 is provided with a stem 14 having a plurality of teeth 15 which are adapted to co'-' operate with a pinion 18, the latter member being secured to a shaft 19 having a handle 20 at its outer end, A notched segment 21 is also provided to define'the positions of the handle 20 inthe same manner as hereinbefore set forth with respect to the hot plates 11 of the range l. Flexible members 23 are employed for connecting the several oven hot-plates 11 to the heat-storage body- 3 or its arm 8.

Disposed within the oven 2 are a plurality of shelves 26 for supporting the inaterials to be cooked, andsaid oven is furthermore provided with a door 27which is preferably filled with heat-insulating material and is pivotally supported upon a plurality of hinges 28.

By reason of the mechanism, hereinbefore set forth, for adjusting the positions of theoven hot-plates 11f, it-is evident that the distribution of the lieat within the oven may be regulated as desired; for instance,

if it be desired to increase the amount of heat delivered to the upper surface of the materials to be cooked, itis only necessary to turn the handle 20 thatis associated with the upper hot-plate 11, whereby said hotplate may be lowered into proximity to the materials. Thus, by adjusting the positions of the upper and lower hot-plates 11, any desired distribution of heat within the oven and with respect to the materials to be cooked may be obtained. Obviously, the

oven 2 may be provided with other hotplates which may be located adjacent to the side and rear walls thereof, if desired. Furthermore, since the structural details of the mechanisms for actuating the hot-plates 11 and 11 are not material to my invention, any other suitable means for accomplishing the same purpose may be employed.

' Reference may now be had to Figs. 3,4, 5 p

and 6 which illustrate the oven 2 as provided with a plurality of stationary hotplates 29 and 30 which constitute integral parts of the heat-storage body 3, said hot plate 29 being located at the top and rear of the oven 2, while hot-plate 30 is disposed at the bottom thereof. Located adjacent to the hot-plates 29 and 30 are a plurality of adjustable shutters 31, 32 and 33. v

The shutters 31, 32 and 33 are of like construction 'and each comprises a. plurality of vanes or blades 34 that are pivotally 'mounted upon and have integral projecting members 36 disposed at substantially right angles thereto and which project into openings37 in a longitudinally movable channel member 38. The channel member 38 is provided'with a plurality of teeth 39 which are adapted to cooperate with a segment 40 having teeth 41. 'The'toothed segment 40 is fixed to a shaft 42 which projects to the ex- ,terior of the oven andis provided with a handle or knob '43 for purposes of manipulation. The rack-and-pinion mechanism, just described, is located at one end of the vanes 34 and said vanes extend the full width of the oven, and therefore, when closed, as shown in the case of shutters 31 and 32 in-Fig. 39- are adapted to obstruct the distribution of heat from the adjacent with and which is provided with corresponding longitudinally. disposed openings 45. The movable member 46 is provided with ahandle 47 by means of which said member -may be moved relative to the stationary member'44. As shown in the drawings, the movable member 46 partially overlaps the openings of the stationary member 44, leaving narrow slits or openings 48 through which the heat from hot-plate 29 can be deliveredto the interior of the oven 2.

. Obviously, by adjusting the position of the movable member 46, the widthsof the open ings 48 may be increased or decreased as desired, whereby the distribution of heat from hot-plate 29 may be regulated.

Although-I have set forth the principle of my invention,- and have showrrand described apparatus.,which I now consider to be the "preferred embodiment thereof, those skilled in the art will readily understand that the benefits and advantages of my invention may be obtained, to a greater or less degree, by. other apparatus embodying modifications in the structural details and arrangement and location of parts, and it is my intention to cover such modifications in the appended claims.

1 claim. as my invention:

1. In a'heating device, the combination withaheat-storage body having a plurality of projecting arms in good thermal conducjtiveirelation :jthereto, of means for heating said body, and heat-insulating material envelop-ing thei same."

2. In a heating device, the combination with a heat-storage body having a plurality of integrally associated projecting arms, and

means for heating said body, ofmovable members severally associated with said arms, and walls of heat-insulating material enveloping said parts.

3. In a cooking with a heat-storage body having a plurality of separate projecting arms, and an electric heater associated with said body, of a movable hot-plate associated with each of said arms, means for actuating said hot-plate, and heat-insulating material surrounding said parts.

4. In a cooking device, the combination with a range and an oven, of heat-storage body associated therewith and having a plurality of integral arms for supplying heat to said oven and said range, means for elec trically heating said body, .and heat-insulating material enveloping said body and said arms.

5. In an electrically heated cooking dc vice, the combination'with a range and an oven, of heat-storage body interposed be tween and associated with said range and said oven, heat-insulating walls enveloping said body, and an electric heater associated therewith for supplying heat thereto.

6. In an electrically heated cooking device, the'combination with a range and an oven, a heat-storage body interposed between and associated with said range and-- said oven, heat insulating walls enveloping said body, and an electric heater for. said body, of movable hot-plates for use in said range and said oven, and members of flexible.

heat-conducting material for connectingsaid hot-plates to said storage body. 7 In an electrically heated cooking device, th:-:=. combination with a heat-storage body, and' an electric heater therefor, of a' plurality of movable hot-plates, flexible means of heat-conducting material connecting said hot-plates to said body, adjustable means for actuating said hotplates,- and walls of heat-insulating material surrounding said parts to prevent the radiation of heat.

8. An electrically heated cooking device comprising an oven, a heat-storage body associated therewith, an electric heater therefor, and heat-insulating material surrounding said parts, of a plurality of hot-platesdisposed *within said oven, and means for regulating the distribution of heat. therefrom.

9. An electrically heated cooking device pomprising an oven, a heat-storage body associated therewith, an electric heater for said body, heat-insulating material enveloping saidparts, and means for regulating the -dis-' tribution ofheat from said body within'said oven.

device, the combination '10.'A cooking device comprising an oven,

' heat-storage bodies disposed therein, an electric heater for said bodies, Walls of heat-insulating material surrounding said parts, and distributing means for regulating the heatdelivered from said bodies.

, 11. A cooking device comprising an oven, heat-storage bodies disposed therein, an elec tric heater for said bodies, a heat-insulating envelop surrounding said parts, and mechemical means for adjusting thepositions of said heat-storage bodies.

j 12. A cooking-device comprising an oven,

a main heat-storage body associated therewith, means for electrically heating said body, auxiliary hot-plates severally dis posed at the top, and bottom of said oven,

- flexible heat-conducting members connecting heat-storage bodies disposed therein, means said hot-plates to said body, and mechanical means for adjusting the positions of said hot-plates.

13. A cooking device comprising an oven,

for heating said bodies, and means disposed ad acent to said bodies for regulatlng the distribution of said heat Within said ,oven.

Copies '01 this patent may be obtained for 14. A cooking device comprising an'oven,

heat-storage bodies disposed therein, means .for electrically heating said bodies, and adjustable shutters disposed adjacent to said bodies for regulating the distribution of;

In testimony whereof, I have hereunto subscribed my name this 5th day of Aug.-

I THEODORE HOOCK.

lVitn esses e LoUIs YANDORN,

Bussin F. DUNLAR.

five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

